[Group.of.nepali.translators] [Bug 1673564] Re: ThunderX: soft lockup on 4.8+ kernels when running qemu-efi with vhost=on
Backporting to the Xenial (Ubntu 16.04) kernel isn't feasible. 16.04 users are requested to use the hwe-z kernel as noted in the following Wiki page : https://wiki.ubuntu.com/HardwareSupport/Machines/Servers/Cavium/ThunderXCRB1S ** Changed in: linux (Ubuntu Xenial) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1673564 Title: ThunderX: soft lockup on 4.8+ kernels when running qemu-efi with vhost=on Status in linux package in Ubuntu: Fix Released Status in linux source package in Xenial: Fix Released Status in linux source package in Yakkety: Won't Fix Status in linux source package in Zesty: Fix Released Bug description: [Impact] VMs can cause interrupts to be disabled on the host CPU, resulting in hangs. [Test Case] Download the attached vm-start-stop.tar.gz and unpack it. Run the start.sh script within. This will start 30 parallel loops where a VM is defined, started, allowed 60s to run, then destroyed. If the bug exists, within 10 minutes you'll see qemu processes start to hang, along with soft lockup messages on the console. Note that this script is compatible with xenial libvirt syntax - it likely needs tweaks to run in newer Ubuntu releases, just due to QEMU/libvirt changes. [Regression Risk] The code changes are restricted to ARM - but there are a lot of them. While we've attempted to stress test the proposed changes on both impacted and non-impacted (non-ThunderX) systems, it is possible that there are issues that our test isn't finding, which would likely surface as KVM guest crashes/hangs. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1673564/+subscriptions ___ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp
[Group.of.nepali.translators] [Bug 1673564] Re: ThunderX: soft lockup on 4.8+ kernels when running qemu-efi with vhost=on
This bug was fixed in the package linux - 4.10.0-33.37 --- linux (4.10.0-33.37) zesty; urgency=low * linux: 4.10.0-33.37 -proposed tracker (LP: #1709303) * CVE-2017-1000112 - Revert "udp: consistently apply ufo or fragmentation" - udp: consistently apply ufo or fragmentation * CVE-2017-1000111 - Revert "net-packet: fix race in packet_set_ring on PACKET_RESERVE" - packet: fix tp_reserve race in packet_set_ring * ThunderX: soft lockup on 4.8+ kernels when running qemu-efi with vhost=on (LP: #1673564) - irqchip/gic-v3: Add missing system register definitions - arm64: KVM: Do not use stack-protector to compile EL2 code - KVM: arm/arm64: vgic-v3: Use PREbits to infer the number of ICH_APxRn_EL2 registers - KVM: arm/arm64: vgic-v3: Fix nr_pre_bits bitfield extraction - arm64: Add a facility to turn an ESR syndrome into a sysreg encoding - KVM: arm/arm64: vgic-v3: Add accessors for the ICH_APxRn_EL2 registers - KVM: arm64: Make kvm_condition_valid32() accessible from EL2 - KVM: arm64: vgic-v3: Add hook to handle guest GICv3 sysreg accesses at EL2 - KVM: arm64: vgic-v3: Add ICV_BPR1_EL1 handler - KVM: arm64: vgic-v3: Add ICV_IGRPEN1_EL1 handler - KVM: arm64: vgic-v3: Add ICV_IAR1_EL1 handler - KVM: arm64: vgic-v3: Add ICV_EOIR1_EL1 handler - KVM: arm64: vgic-v3: Add ICV_AP1Rn_EL1 handler - KVM: arm64: vgic-v3: Add ICV_HPPIR1_EL1 handler - KVM: arm64: vgic-v3: Enable trapping of Group-1 system registers - KVM: arm64: Enable GICv3 Group-1 sysreg trapping via command-line - KVM: arm64: vgic-v3: Add ICV_BPR0_EL1 handler - KVM: arm64: vgic-v3: Add ICV_IGNREN0_EL1 handler - KVM: arm64: vgic-v3: Add misc Group-0 handlers - KVM: arm64: vgic-v3: Enable trapping of Group-0 system registers - KVM: arm64: Enable GICv3 Group-0 sysreg trapping via command-line - arm64: Add MIDR values for Cavium cn83XX SoCs - [Config] CONFIG_CAVIUM_ERRATUM_30115=y - arm64: Add workaround for Cavium Thunder erratum 30115 - KVM: arm64: vgic-v3: Add ICV_DIR_EL1 handler - KVM: arm64: vgic-v3: Add ICV_RPR_EL1 handler - KVM: arm64: vgic-v3: Add ICV_CTLR_EL1 handler - KVM: arm64: vgic-v3: Add ICV_PMR_EL1 handler - KVM: arm64: Enable GICv3 common sysreg trapping via command-line - KVM: arm64: vgic-v3: Log which GICv3 system registers are trapped - arm64: KVM: Make unexpected reads from WO registers inject an undef - KVM: arm64: Log an error if trapping a read-from-write-only GICv3 access - KVM: arm64: Log an error if trapping a write-to-read-only GICv3 access * ibmvscsis: Do not send aborted task response (LP: #1689365) - target: Fix unknown fabric callback queue-full errors - ibmvscsis: Do not send aborted task response - ibmvscsis: Clear left-over abort_cmd pointers - ibmvscsis: Fix the incorrect req_lim_delta * hisi_sas performance improvements (LP: #1708734) - scsi: hisi_sas: define hisi_sas_device.device_id as int - scsi: hisi_sas: optimise the usage of hisi_hba.lock - scsi: hisi_sas: relocate sata_done_v2_hw() - scsi: hisi_sas: optimise DMA slot memory * hisi_sas driver reports mistakes timed out task for internal abort (LP: #1708730) - scsi: hisi_sas: fix timeout check in hisi_sas_internal_task_abort() * scsi: hisi_sas: add null check before indirect pointer dereference (LP: #1708714) - scsi: hisi_sas: add null check before indirect pointer dereference * [LTCTest][Opal][FW860.20] HMI recoverable errors failed to recover and system goes to dump state. (LP: #1684054) - powerpc/64: Fix HMI exception on LE with CONFIG_RELOCATABLE=y * Set CONFIG_SATA_HIGHBANK=y on armhf (LP: #1703430) - [Config] CONFIG_SATA_HIGHBANK=y * Adt tests of src:linux time out often on armhf lxc containers (LP: #1705495) - [Packaging] tests -- reduce rebuild test to one flavour * support Hip07/08 I2C controller (LP: #1708293) - ACPI / APD: Add clock frequency for Hisilicon Hip07/08 I2C controller - i2c: designware: Add ACPI HID for Hisilicon Hip07/08 I2C controller * Mute key LED does not work on HP ProBook 440 (LP: #1705586) - ALSA: hda - Add HP ZBook 15u G3 Conexant CX20724 GPIO mute leds - ALSA: hda - Add mute led support for HP ProBook 440 G4 * Hisilicon D05 onboard fibre NIC link indicator LEDs don't work (LP: #1704903) - net: hns: add acpi function of xge led control * zesty unable to handle kernel NULL pointer dereference (LP: #1680904) - drm/i915: Do not drop pagetables when empty * hns: use after free in hns_nic_net_xmit_hw (LP: #1704885) - net: hns: Fix a skb used after free bug * [ARM64] config EDAC_GHES=y depends on EDAC_MM_EDAC=y (LP: #1706141) - [Config] set EDAC_MM_EDAC=y for ARM64 * [Hyper-V] hv_netvsc: Exclude non-TCP port numbers from vRSS hashing (LP: #1690174) - hv_netvsc: Exclude non-TCP port numbers from vRSS hashing *
[Group.of.nepali.translators] [Bug 1673564] Re: ThunderX: soft lockup on 4.8+ kernels when running qemu-efi with vhost=on
Note that, while this symptom is seemingly only reproducible with >= 4.10 (hwe-y), there is another symptom of this problem that is reproducible with 4.4 (hwe-x). That symptom is that VMs will hang during teardown - easily reproducible using a parallel VM start/stop test. I'll therefore mark this as impacting >= xenial. ** Also affects: linux (Ubuntu Xenial) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Zesty) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Yakkety) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Xenial) Status: New => Confirmed ** Changed in: linux (Ubuntu Yakkety) Status: New => Confirmed ** Changed in: linux (Ubuntu Zesty) Status: New => Confirmed ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Changed in: linux (Ubuntu Xenial) Importance: Undecided => High ** Changed in: linux (Ubuntu Yakkety) Importance: Undecided => High ** Changed in: linux (Ubuntu Zesty) Importance: Undecided => High ** Description changed: - This is a followup of an earlier thread/bug that we have narrowed down - to an incompatibility/issue with vhost support in qemu-efi. Without - vhost=on qemu seems to be working fine. + [Impact] + VMs can cause interrupts to be disabled on the host CPU, resulting in hangs. - I have tested several edk2 firmwares: - - xenial - - zesty - - Fedora: ftp://195.220.108.108/linux/fedora-secondary/development/rawhide/Everything/aarch64/os/Packages/e/edk2-aarch64-20170209git296153c5-2.fc26.noarch.rpm + [Test Case] + See Comment #1. - I have also tested with different guests: - - cirros: https://download.cirros-cloud.net/daily/20161201/cirros-d161201-aarch64-disk.img - - ubuntu xenial: https://cloud-images.ubuntu.com/xenial/current/xenial-server-cloudimg-arm64-uefi1.img - - The test steps are simple enough. A tap device is needed, qemu-kvm, - qemu-efi need to be installed. The UEFI iamge is run as shown in the - launch.sh script, the tap device is used in vhost=on mode. - - Also note that the QEMU_EFI.fd binary needs to be padded up to 64M: - dd if=/dev/zero of=AAVMF_CODE.fd bs=1M count=64 - dd if=QEMU_EFI.fd of=AAVMF_CODE.fd conv=notrunc - - - The result was always the same, the node crashing with soft-lockups when qemu was attempting to boot the kernel. - - I will attach all the relevant information shortly. + [Regression Risk] + (TBD, once proposed patches are finalized) -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1673564 Title: ThunderX: soft lockup on 4.8+ kernels when running qemu-efi with vhost=on Status in linux package in Ubuntu: Confirmed Status in linux source package in Xenial: Confirmed Status in linux source package in Yakkety: Confirmed Status in linux source package in Zesty: Confirmed Bug description: [Impact] VMs can cause interrupts to be disabled on the host CPU, resulting in hangs. [Test Case] See Comment #1. [Regression Risk] (TBD, once proposed patches are finalized) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1673564/+subscriptions ___ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp
